Home / 28,725.86-39,629.93-20,750.60

Finding the Fourth Proportional to 28,725.86, 39,629.93 and 20,750.60

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Solution

The fourth proportional to 28,725.86, 39,629.93 and 20,750.60 is: 28,627.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,725.86 : 39,629.93 = 20,750.60 : x
  2. Step 2: Convert to fraction form
    28,725.86/39,629.93 = 20,750.60/x
  3. Step 3: Cross multiply
    28,725.86x = 39,629.93 × 20,750.60
  4. Step 4: Simplify right side
    28,725.86x = 822,344,820.78
  5. Step 5: Solve for x
    x = 822,344,820.78/28,725.86
  6. Step 6: Final answer
    x = 28,627.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.